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CentOS7にMySQLをインストールする

2019年1月15日

リポジトリの追加

yumでインストールできるようにするためリポジトリを追加します。
rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

リポジトリの確認

yumリポジトリが追加されているか確認。
yum repolist all | grep mysql
リストにMySQL x.x Community Serverがあれば良い

MySQLのインストール

yum install mysql-community-server

MySQLのバージョン確認

mysqld --version

MySQLの起動

systemctl start mysqld

ログインパスワードの確認

grep 'temporary password' /var/log/mysqld.log

MySQLのセキュリティ設定

mysql_secure_installationを入力する
mysql_secure_installation

Securing the MySQL server deployment.

Enter password for user root:

The existing password for the user account root has expired. Please set a new password.

New password:

Re-enter new password:
The 'validate_password' component is installed on the server.
The subsequent steps will run with the existing configuration
of the component.
Using existing password for root.

Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : y # rootパスワードの変更確認

New password:

Re-enter new password:

Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y # 匿名ユーザーの削除
Success.


Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y # リモートからrootユーザーでのログイン
Success.

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.


Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y # testテーブルの削除
 - Dropping test database...
Success.

 - Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y # 権限の更新
Success.

All done!

MySQLへのログイン

mysql -u root -p
コマンド入力、Enter、新しいパスワードを入力してEnter

MySQLの操作

show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
テーブルが表示できればよし。
抜けるときはexitで抜ける

MySQLの停止

systemctl stop mysqld

参考

公式のリポジトリの追加・インストール等
https://dev.mysql.com/downloads/repo/yum/
https://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/